Results 81 to 90 of about 1,034,359 (315)

How Does the Ocean Melt Antarctic Ice Shelves?

Annual Review of Marine Science
The present-day state and future of the Antarctic Ice Sheet depend on the rate at which the ocean melts its fringing ice shelves. Ocean heat must cross many physical and dynamical barriers to melt ice shelves, with the last of these being the ice-ocean ...
M. G. Rosevear, B. Gayen, Catherine A. Vreugdenhil, B. Galton-Fenzi   +3 more
semanticscholar   +1 more source

Structural insights into an engineered feruloyl esterase with improved MHET degrading properties

FEBS Letters, EarlyView.
A feruloyl esterase was engineered to mimic key features of MHETase, enhancing the degradation of PET oligomers. Structural and computational analysis reveal how a point mutation stabilizes the active site and reshapes the binding cleft, expading substrate scope.
Panagiota Karampa, Konstantinos Makryniotis, Theofani‐Iosifina Sousani, Evangelos Topakas, Vangelis Daskalakis, Maria Dimarogona   +5 more
wiley   +1 more source

Valosin‐containing protein counteracts ATP‐driven dissolution of FUS condensates through its ATPase activity in vitro

FEBS Letters, EarlyView.
Biomolecular condensates formed by fused in sarcoma (FUS) are dissolved by high ATP concentrations yet persist in cells. Using a reconstituted system, we demonstrate that valosin‐containing protein (VCP), an AAA+ ATPase, counteracts ATP‐driven dissolution of FUS condensates through its D2 ATPase activity.
Hitomi Kimura, Shin‐ichi Tate, Kyota Yasuda   +2 more
wiley   +1 more source

Three-dimensional modelling of calving processes on Johnsons Glacier, Livingston Island, Antarctica. [PDF]

, 2010
Iceberg calving is an important mass loss mechanism from ice shelves and tidewater glaciers for many mid and high-latitude glaciers and ice caps, yet the process is not well represented in prognostic models of ice dynamics.
Martin, Carlos, Corcuera Labrado, María Isabel, Otero García, Jaime, Navarro Valero, Francisco José, Cuadrado Ebrero, Maria Luisa   +4 more
core  

Hyperosmotic stress induces PARP1‐mediated HPF1‐dependent mono(ADP‐ribosyl)ation

FEBS Letters, EarlyView.
Sorbitol‐induced hyperosmotic stress rapidly induces reversible mono(ADP‐ribosyl)ation (MARylation) on PARP1 without the signs of genotoxic signaling. We show that PARP1 autoMARylation is HPF1 dependent and forms hydroxylamine‐resistant O‐glycosidic linkages.
Anna Georgina Kopasz, Mihály Mérey, Rebeka Vásárhelyi, Ramóna Pék, Victor Imburchia, László Henn, Adrián Kószó, Nicholas D. Lakin, Ivan Ahel, Sébastien Huet, Ágnes Czibula, Gyula Timinszky   +11 more
wiley   +1 more source

Seasonal variability of ocean heat transport and ice-shelf basal melt around Antarctica [PDF]

The Cryosphere
The delivery of ocean heat to Antarctic ice shelves is due to intrusions of waters warmer than the local freezing point temperature. Changes in the supply of ocean heat will determine how rapidly ice shelves melt at their base, which affects Antarctic ...
F. Boeira Dias, F. Boeira Dias, M. H. England, M. H. England, A. K. Morrison, B. K. Galton-Fenzi, B. K. Galton-Fenzi, B. K. Galton-Fenzi   +7 more
doaj   +1 more source

Basal crevasses in Larsen C Ice Shelf and implications for their global abundance [PDF]

The Cryosphere, 2012
Basal crevasses extend upwards from the base of ice bodies and can penetrate more than halfway through the ice column under conditions found commonly on ice shelves.
A. Luckman, D. Jansen, B. Kulessa, E. C. King, P. Sammonds, D. I. Benn   +5 more
doaj   +1 more source

Septin 9 PB domains coordinate centrosome positioning and microtubule acetylation to control epithelial polarity

FEBS Letters, EarlyView.
Septin 9 polybasic domains couple phosphoinositide‐rich membrane binding to centrosome positioning, Golgi organization, and microtubule acetylation to control epithelial polarity. Their loss disrupts this axis, causing centrosome mispositioning, Golgi fragmentation, reduced microtubule acetylation, and polarity inversion via upregulation of the ...
Ting ting Cai, Mohyeddine Omrane, Nassima Benzoubir, Didier Samuel, Ama Gassama‐Diagne   +4 more
wiley   +1 more source

Evaluating CMIP6 models for near-surface air temperature projections over Antarctic ice shelves

Journal of Glaciology
The meltwater-driven disintegration of the Larsen B ice shelf has raised concerns that other ice shelves may face similar vulnerabilities as global temperatures rise.
Maya Fields, Jeremy Bassis, Samuel B Kachuck, Mark Moldwin, Cécile Agosta   +4 more
doaj   +1 more source

Simulated melt rates for the Totten and Dalton ice shelves [PDF]

Ocean Science, 2014
The Totten Glacier is rapidly losing mass. It has been suggested that this mass loss is driven by changes in oceanic forcing; however, the details of the ice–ocean interaction are unknown.
D. E. Gwyther, B. K. Galton-Fenzi, J. R. Hunter, J. L. Roberts   +3 more
doaj   +1 more source